LIGHTING SYSTEM ALL Stop Light do not Illuminate

WIRING DIAGRAM

A01XBOUE07
A01X1DQE02

PROCEDURE


  1. CHECK STOP LIGHT OPERATION


    1. Check that the stop lights illuminate when the brake pedal is depressed.

      OK
      The stop lights illuminate when the brake pedal is depressed.

    OK

    CHECK CONNECTOR CONNECTION CONDITION

    NG

  2. CHECK HARNESS AND CONNECTOR (OUT)


    1. Disconnect the A24 hydraulic brake booster (skid control ECU) connector.

    2. Disconnect the A39 stop light control relay connector.

    3. Disconnect the S4 or T1 center stop light assembly connector.

    4. Disconnect the L3 or Y1 rear combination light assembly RH connector.

    5. Disconnect the K4 or n1 rear combination light assembly LH connector.

    6. Disconnect the K49 or L87 radio setting condenser connector.

    7. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A24-45 (STP2) - A39-8 (OUT) Always Below 1 Ω
      A24-45 (STP2) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK STOP LIGHT CONTROL RELAY ASSEMBLY (OUT)


    1. Disconnect the S4 or T1 center stop light assembly connector.

    2. Disconnect the L3 or Y1 rear combination light assembly RH connector.

    3. Disconnect the K4 or n1 rear combination light assembly LH connector.

    4. Disconnect the K49 or L87 radio setting condenser connector.

    5. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      A39-8 (OUT) - Body ground Brake pedal depressed 11 to 14 V

    OK

    REPAIR OR REPLACE REPAIR OR REPLACE CENTER STOP LIGHT ASSEMBLY, REAR COMBINATION LIGHT ASSEMBLY AND RADIO SETTING CONDENSER

    NG

    REPLACE STOP LIGHT CONTROL RELAY ASSEMBLY